+ means ×; × means ÷; ÷ means –; then 8 +3 × 2 ÷6 = ...........
If 5 × 4 = 10, 7 × 6 = 21, 9 × 8 = 36 then 11 × 2 = ..........
Complete the series:
5,10,30, ...................
The cost price of 10 books is equal to the selling price of 9 books. Find the gain percent.
If 92y = 36what is 9y?
The sum of four consecutive counting numbers is 154. Find the smallest number.